^ amphetamines and cocaine can trigger some pretty psychotic acts of violence. Truth is that alcohol is more toxic to the body because of its dose and pharmacology, and more toxic to society because of violence and public health issues.
It's just about the worst possible drug to make available to a population, but because it's so easy to produce, we are a victim of history. Had cannabis been as easy to obtain, and as widespread, we'd be a lot better, as a species, to other species, the planet in general, and each other most of all